sfa/managers/slice_manager_pl.py

   1 #
   2 import sys
   3 import time,datetime
   4 from StringIO import StringIO
   5 from types import StringTypes
   6 from copy import deepcopy
   7 from copy import copy
   8 from lxml import etree
   9
  10 from sfa.util.sfalogging import sfa_logger
  11 from sfa.util.rspecHelper import merge_rspecs
  12 from sfa.util.xrn import Xrn, urn_to_hrn, hrn_to_urn
  13 from sfa.util.plxrn import hrn_to_pl_slicename
  14 from sfa.util.rspec import *
  15 from sfa.util.specdict import *
  16 from sfa.util.faults import *
  17 from sfa.util.record import SfaRecord
  18 from sfa.util.policy import Policy
  19 from sfa.util.prefixTree import prefixTree
  20 from sfa.util.sfaticket import *
  21 from sfa.trust.credential import Credential
  22 from sfa.util.threadmanager import ThreadManager
  23 import sfa.util.xmlrpcprotocol as xmlrpcprotocol
  24 import sfa.plc.peers as peers
  25 from sfa.util.version import version_core
  26
  27 # XX FIX ME:  should merge result from multiple aggregates instead of
  28 # calling aggregate implementation
  29 from sfa.managers.aggregate_manager_pl import slice_status
  30
  31 # we have specialized xmlrpclib.ServerProxy to remember the input url
  32 # OTOH it's not clear if we're only dealing with XMLRPCServerProxy instances
  33 def get_serverproxy_url (server):
  34     try:
  35         return server.url
  36     except:
  37         sfa_logger().warning("GetVersion, falling back to xmlrpclib.ServerProxy internals")
  38         return server._ServerProxy__host + server._ServerProxy__handler
  39
  40 def GetVersion(api):
  41     # peers explicitly in aggregates.xml
  42     peers =dict ([ (peername,get_serverproxy_url(v)) for (peername,v) in api.aggregates.items()
  43                    if peername != api.hrn])
  44     xrn=Xrn (api.hrn)
  45     sm_version=version_core({'interface':'slicemgr',
  46                              'hrn' : xrn.get_hrn(),
  47                              'urn' : xrn.get_urn(),
  48                              'peers': peers,
  49                              })
  50     # local aggregate if present needs to have localhost resolved
  51     if api.hrn in api.aggregates:
  52         local_am_url=get_serverproxy_url(api.aggregates[api.hrn])
  53         sm_version['peers'][api.hrn]=local_am_url.replace('localhost',sm_version['hostname'])
  54     return sm_version
  55
  56 def create_slice(api, xrn, creds, rspec, users):
  57     hrn, type = urn_to_hrn(xrn)
  58
  59     # Validate the RSpec against PlanetLab's schema --disabled for now
  60     # The schema used here needs to aggregate the PL and VINI schemas
  61     # schema = "/var/www/html/schemas/pl.rng"
  62     schema = None
  63     if schema:
  64         try:
  65             tree = etree.parse(StringIO(rspec))
  66         except etree.XMLSyntaxError:
  67             message = str(sys.exc_info()[1])
  68             raise InvalidRSpec(message)
  69
  70         relaxng_doc = etree.parse(schema)
  71         relaxng = etree.RelaxNG(relaxng_doc)
  72
  73         if not relaxng(tree):
  74             error = relaxng.error_log.last_error
  75             message = "%s (line %s)" % (error.message, error.line)
  76             raise InvalidRSpec(message)
  77
  78     # get the callers hrn
  79     valid_cred = api.auth.checkCredentials(creds, 'createsliver', hrn)[0]
  80     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
  81
  82     # attempt to use delegated credential first
  83     credential = api.getDelegatedCredential(creds)
  84     if not credential:
  85         credential = api.getCredential()
  86     threads = ThreadManager()
  87     for aggregate in api.aggregates:
  88         # prevent infinite loop. Dont send request back to caller
  89         # unless the caller is the aggregate's SM
  90         if caller_hrn == aggregate and aggregate != api.hrn:
  91             continue
  92
  93         # Just send entire RSpec to each aggregate
  94         server = api.aggregates[aggregate]
  95         threads.run(server.CreateSliver, xrn, credential, rspec, users)
  96
  97     results = threads.get_results()
  98     merged_rspec = merge_rspecs(results)
  99     return merged_rspec
 100
 101 def renew_slice(api, xrn, creds, expiration_time):
 102     hrn, type = urn_to_hrn(xrn)
 103
 104     # get the callers hrn
 105     valid_cred = api.auth.checkCredentials(creds, 'renewsliver', hrn)[0]
 106     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 107
 108     # attempt to use delegated credential first
 109     credential = api.getDelegatedCredential(creds)
 110     if not credential:
 111         credential = api.getCredential()
 112     threads = ThreadManager()
 113     for aggregate in api.aggregates:
 114         # prevent infinite loop. Dont send request back to caller
 115         # unless the caller is the aggregate's SM
 116         if caller_hrn == aggregate and aggregate != api.hrn:
 117             continue
 118
 119         server = api.aggregates[aggregate]
 120         threads.run(server.RenewSliver, xrn, [credential], expiration_time)
 121     threads.get_results()
 122     return 1
 123
 124 def get_ticket(api, xrn, creds, rspec, users):
 125     slice_hrn, type = urn_to_hrn(xrn)
 126     # get the netspecs contained within the clients rspec
 127     aggregate_rspecs = {}
 128     tree= etree.parse(StringIO(rspec))
 129     elements = tree.findall('./network')
 130     for element in elements:
 131         aggregate_hrn = element.values()[0]
 132         aggregate_rspecs[aggregate_hrn] = rspec
 133
 134     # get the callers hrn
 135     valid_cred = api.auth.checkCredentials(creds, 'getticket', slice_hrn)[0]
 136     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 137
 138     # attempt to use delegated credential first
 139     credential = api.getDelegatedCredential(creds)
 140     if not credential:
 141         credential = api.getCredential()
 142     threads = ThreadManager()
 143     for aggregate, aggregate_rspec in aggregate_rspecs.items():
 144         # prevent infinite loop. Dont send request back to caller
 145         # unless the caller is the aggregate's SM
 146         if caller_hrn == aggregate and aggregate != api.hrn:
 147             continue
 148         server = None
 149         if aggregate in api.aggregates:
 150             server = api.aggregates[aggregate]
 151         else:
 152             net_urn = hrn_to_urn(aggregate, 'authority')
 153             # we may have a peer that knows about this aggregate
 154             for agg in api.aggregates:
 155                 target_aggs = api.aggregates[agg].get_aggregates(credential, net_urn)
 156                 if not target_aggs or not 'hrn' in target_aggs[0]:
 157                     continue
 158                 # send the request to this address
 159                 url = target_aggs[0]['url']
 160                 server = xmlrpcprotocol.get_server(url, api.key_file, api.cert_file)
 161                 # aggregate found, no need to keep looping
 162                 break
 163         if server is None:
 164             continue
 165         threads.run(server.GetTicket, xrn, credential, aggregate_rspec, users)
 166
 167     results = threads.get_results()
 168
 169     # gather information from each ticket
 170     rspecs = []
 171     initscripts = []
 172     slivers = []
 173     object_gid = None
 174     for result in results:
 175         agg_ticket = SfaTicket(string=result)
 176         attrs = agg_ticket.get_attributes()
 177         if not object_gid:
 178             object_gid = agg_ticket.get_gid_object()
 179         rspecs.append(agg_ticket.get_rspec())
 180         initscripts.extend(attrs.get('initscripts', []))
 181         slivers.extend(attrs.get('slivers', []))
 182
 183     # merge info
 184     attributes = {'initscripts': initscripts,
 185                  'slivers': slivers}
 186     merged_rspec = merge_rspecs(rspecs)
 187
 188     # create a new ticket
 189     ticket = SfaTicket(subject = slice_hrn)
 190     ticket.set_gid_caller(api.auth.client_gid)
 191     ticket.set_issuer(key=api.key, subject=api.hrn)
 192     ticket.set_gid_object(object_gid)
 193     ticket.set_pubkey(object_gid.get_pubkey())
 194     #new_ticket.set_parent(api.auth.hierarchy.get_auth_ticket(auth_hrn))
 195     ticket.set_attributes(attributes)
 196     ticket.set_rspec(merged_rspec)
 197     ticket.encode()
 198     ticket.sign()
 199     return ticket.save_to_string(save_parents=True)
 200
 201
 202 def delete_slice(api, xrn, creds):
 203     hrn, type = urn_to_hrn(xrn)
 204
 205     # get the callers hrn
 206     valid_cred = api.auth.checkCredentials(creds, 'deletesliver', hrn)[0]
 207     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 208
 209     # attempt to use delegated credential first
 210     credential = api.getDelegatedCredential(creds)
 211     if not credential:
 212         credential = api.getCredential()
 213     threads = ThreadManager()
 214     for aggregate in api.aggregates:
 215         # prevent infinite loop. Dont send request back to caller
 216         # unless the caller is the aggregate's SM
 217         if caller_hrn == aggregate and aggregate != api.hrn:
 218             continue
 219         server = api.aggregates[aggregate]
 220         threads.run(server.DeleteSliver, xrn, credential)
 221     threads.get_results()
 222     return 1
 223
 224 def start_slice(api, xrn, creds):
 225     hrn, type = urn_to_hrn(xrn)
 226
 227     # get the callers hrn
 228     valid_cred = api.auth.checkCredentials(creds, 'startslice', hrn)[0]
 229     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 230
 231     # attempt to use delegated credential first
 232     credential = api.getDelegatedCredential(creds)
 233     if not credential:
 234         credential = api.getCredential()
 235     threads = ThreadManager()
 236     for aggregate in api.aggregates:
 237         # prevent infinite loop. Dont send request back to caller
 238         # unless the caller is the aggregate's SM
 239         if caller_hrn == aggregate and aggregate != api.hrn:
 240             continue
 241         server = api.aggregates[aggregate]
 242         threads.run(server.Start, xrn, credential)
 243     threads.get_results()
 244     return 1
 245
 246 def stop_slice(api, xrn, creds):
 247     hrn, type = urn_to_hrn(xrn)
 248
 249     # get the callers hrn
 250     valid_cred = api.auth.checkCredentials(creds, 'stopslice', hrn)[0]
 251     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 252
 253     # attempt to use delegated credential first
 254     credential = api.getDelegatedCredential(creds)
 255     if not credential:
 256         credential = api.getCredential()
 257     threads = ThreadManager()
 258     for aggregate in api.aggregates:
 259         # prevent infinite loop. Dont send request back to caller
 260         # unless the caller is the aggregate's SM
 261         if caller_hrn == aggregate and aggregate != api.hrn:
 262             continue
 263         server = api.aggregates[aggregate]
 264         threads.run(server.Stop, xrn, credential)
 265     threads.get_results()
 266     return 1
 267
 268 def reset_slice(api, xrn):
 269     """
 270     Not implemented
 271     """
 272     return 1
 273
 274 def shutdown(api, xrn, creds):
 275     """
 276     Not implemented
 277     """
 278     return 1
 279
 280 def status(api, xrn, creds):
 281     """
 282     Not implemented
 283     """
 284     return 1
 285
 286 def get_slices(api, creds):
 287
 288     # look in cache first
 289     if api.cache:
 290         slices = api.cache.get('slices')
 291         if slices:
 292             return slices
 293
 294     # get the callers hrn
 295     valid_cred = api.auth.checkCredentials(creds, 'listslices', None)[0]
 296     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 297
 298     # attempt to use delegated credential first
 299     credential = api.getDelegatedCredential(creds)
 300     if not credential:
 301         credential = api.getCredential()
 302     threads = ThreadManager()
 303     # fetch from aggregates
 304     for aggregate in api.aggregates:
 305         # prevent infinite loop. Dont send request back to caller
 306         # unless the caller is the aggregate's SM
 307         if caller_hrn == aggregate and aggregate != api.hrn:
 308             continue
 309         server = api.aggregates[aggregate]
 310         threads.run(server.ListSlices, credential)
 311
 312     # combime results
 313     results = threads.get_results()
 314     slices = []
 315     for result in results:
 316         slices.extend(result)
 317
 318     # cache the result
 319     if api.cache:
 320         api.cache.add('slices', slices)
 321
 322     return slices
 323
 324 def get_rspec(api, creds, options):
 325
 326     # get slice's hrn from options
 327     xrn = options.get('geni_slice_urn', '')
 328     hrn, type = urn_to_hrn(xrn)
 329
 330     # get hrn of the original caller
 331     origin_hrn = options.get('origin_hrn', None)
 332     if not origin_hrn:
 333         if isinstance(creds, list):
 334             origin_hrn = Credential(string=creds[0]).get_gid_caller().get_hrn()
 335         else:
 336             origin_hrn = Credential(string=creds).get_gid_caller().get_hrn()
 337
 338     # look in cache first
 339     if api.cache and not xrn:
 340         rspec =  api.cache.get('nodes')
 341         if rspec:
 342             return rspec
 343
 344     hrn, type = urn_to_hrn(xrn)
 345
 346     # get the callers hrn
 347     valid_cred = api.auth.checkCredentials(creds, 'listnodes', hrn)[0]
 348     caller_hrn = Credential(string=valid_cred).get_gid_caller().get_hrn()
 349
 350     # attempt to use delegated credential first
 351     credential = api.getDelegatedCredential(creds)
 352     if not credential:
 353         credential = api.getCredential()
 354     threads = ThreadManager()
 355     for aggregate in api.aggregates:
 356         # prevent infinite loop. Dont send request back to caller
 357         # unless the caller is the aggregate's SM
 358         if caller_hrn == aggregate and aggregate != api.hrn:
 359             continue
 360         # get the rspec from the aggregate
 361         server = api.aggregates[aggregate]
 362         my_opts = copy(options)
 363         my_opts['geni_compressed'] = False
 364         threads.run(server.ListResources, credential, my_opts)
 365         #threads.run(server.get_resources, cred, xrn, origin_hrn)
 366
 367     results = threads.get_results()
 368     merged_rspec = merge_rspecs(results)
 369
 370     # cache the result
 371     if api.cache and not xrn:
 372         api.cache.add('nodes', merged_rspec)
 373
 374     return merged_rspec
 375
 376 def main():
 377     r = RSpec()
 378     r.parseFile(sys.argv[1])
 379     rspec = r.toDict()
 380     create_slice(None,'plc.princeton.tmacktestslice',rspec)
 381
 382 if __name__ == "__main__":
 383     main()
 384